Gas-valve.



E. W. HAVERS.

GAS VALVE.

Arruonlon FILED snm'. 7. 1912.

3,9?,3372 Patented Nov. 2,5, 1913.

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EPHRAIM WILLIAM HAVERS, 0F LONDON, ENGLAND.

GAS-VALVE.

Specification of Letters Patent.

Patented Nov. 25, 1913.

Application led September 7, 1912. Serial No. 719,047.

To all lwhom it may concern Be it known that. I, Eenrum Winmim Havens, a subject. of the King of Great Britain. residing at London, England, haye invented new and useful Improvements 1n Gas-Valves. of which the. following is a specification.

'lhis invention relates to valves such as are used for controlling the passage of gas to a gas burner or gas fire, for example. Such valves may be operated from any distance by suitable means such as the electrical energy produced by the closing of an electric circuit. for example. It may be used in combination with an suitable igniter, electric or otherwise, and orms when so used a complete apparatus. It is often especially desirable in such apparatus to provide a temporary supply of gas for the igniter, or for a flash ity-pass, for exam le, lrrespectlve of the mam supply to the urner, and my invention consists of devices bywhich this temporary supply is obtained in a slm ler and more effectual manner than hereto ore.

According to my invention I arrange the valve as follows-Instead of allowing the operating impulse-such as the force exerted by an electro-magnet--to complete the movement. of the valve at one operation, it is caused to perform only one-half (or thereabout) of its work direct-ly and to store up b v any suitable means, such as gravity or a sprin for example, the force needed t0 complete t ie movement of the valve, this latter force being liberated only on the cessation of thel impulse or the breaking of the electric circuit. Tn the turning-on impulse it will be lseen that b v operating the valve in two steps from one impulse. an intermediate position is formed. and in this intermediate position the valve is allowed to pass the secondary supply of gas required. When the valve is in this intermediate position the main supplv may be cut ofi` but it is preferably turned artly on. The turning-oit impulse is similar to the turning-on impulse, and the operations will necessarily follow one another.

The valve is applicable to any form of igniter, and the types of valves hereinafter referred to are only by way of example.

In order that my invention may be clearly understood, I wil now proceed to describe the same with the aid of the accompanying sheet of drawings, in which- Figure 1 shows one form of valve with operating mechanism applied thereto, the valve being 1n its ofi position; Fig. 2 is an enlarged view of the valve illustrated in Fig. l turned into the intermediate position, that is to say establishing communication between the main gas supply and the by-pass or secondary supply; Flg. 3 a similar view to Fig. .2 but with the valve turned into the open position, that is to say establishing communication between the main gas supply and the main burner; Fig. 4 a. sectional side elevation of Fig. 1 the valve being shown in section; Fig. 5 a section on line A--B of Figs. l and 4 with the valve omitted; Fig. (i shows a modified form of valve: Fig. 7 a transverse section of Fig. 6: and Fig. S a plan view of a dat disk type of valve, such as is fre uently used in gas igniting apparatus of tie kind described.

Referring to Fi s. 1 to 5. rz is a square hollow tube provi ed at or near the middle of its length with a partition b which separates the source of supply c from the outlet rl supplying the burner. The tube a is provided with holes e hereinafter referred to, which are controlled by the valve f which is pivotally mounted in the center of the partition b at the point g. The valve f is closed in at its back by a cover h which may be fixed in any convenient manner to the valve or be integral therewith. The face of the valve is provided with any suitable number of holes i (four being shown in the drawing) adapted to be brought alternately into and out of register with the similar number of holes c formed in the tube a above and below the partition b. One or more holes l7' is or arc also provided in the partition b of the tube a b i which communication may be made with tie valve for establishing the secondary supply for the igniter. flash b v-pass, or the like. l't will be seen that when gas is introduced at c, and the holes t' and c are out of register as in Fig. 1. the gas will be cut oli' from the burner and by-pass. When the valve is in the position indicated in Fig. 2 gas is free to pass from the supply c through the holes z' e and j to the igniter in, or the like, and also a partial supply (l to the main burner. iVhen the valve is in the position illustrated in Fig. 3, gas is free to pass from the supply n through the holes i and c into the hollow of the valve f from the top side of the partition b to the lower side which estab lishes the main suppl al to the gas burner, for example. The va ve contact surface and the surface on the tubular body a. are of course ground together, and may be held in close Contact by means of the spring 1n. mounted on the axis of the valve or ot ierwise as may be convenient.

In the apparatus illustrated in the drawings, it is assumed that the operating impulse is the force exerted by electro-inagncts. This force operates the valve by two distinct steps, and suitable mechanism for accomplishiiur this is shown clearly in Fi". 1, wherein t e action is as follows :-liii the tui-ningen impulse the armature ln lifts when the coils o arc` energized. and in lifting or being attracted toward the coils o ierates the valve f by means of the awl p, turning the saine into the intermediate position. as shown in Fig. 2. Half the trav erse of the valve is thereby effected, and by the action of liftin or attracting tht` arinature toward, the coi s o, the necessary energy to eti'ect the completion of the traverse or stroke of the. valve is stored up by reason of the weight of the` said armature, or bv other suitable means of storing energy. `It will be observed that on the opposite side of the ratchet wheel of the valve is provided another awl q, which by reason of the lifting ot' t ie armut-ure n has been brought by this time into engagement. with the'next. tooth of the ratchet wheel. When the impulse ceases this stored. up force completes the traverse of the valve by the action of the pawl l and the falling or receding urinature 1i, w en the position of the valve becomes as illustrated in Fig. During the intermediate position. obtained by the action of the pawl p as is free to pass to the ignitcr, communication havin" been established therewith through the holes j to the hy-pass tube la, and iu this position the main supply to the burner is shown half on during the supply to the igniter. but iuay he entircly turnet ofl' if desired by suitably arranging the porti-i in the valve. rl`he next ini )ulse will eflect the turning-ofi` and the valve will assume again the position indicated in Fig. 1.

`Figs. G and 'i' show a modification wherein is employed a plug provided with any suitable number of transverse holes to establish a communication between the source of supply and the by-pass or main, as the case may be, tio the burner, a ratchet wheel being provided for intermittently rotating the plu as previously described in connection wit the flat valve. In this case a plug valve r with a ratchet wheel .s is arranged to be intermittently rota-ted to the extent of one. tooth in two steps by any suitable means such as the pawls described in connection Fig. shows the valve r in the intermediete, osition establishin communication from t emain t to u, leadingy to the burner,

and also to the auxiliary burner or ignitcr through v the conditions being similar to those already described.

Fi". 8 shows another construction iii which the valve f is a flat disk pierced with holes w arranged in a circle concentric with the center of the disk, and working pivot-- ally ona base with similar holes a', and the whole inclosed in a gas-tight box y. One or more holes (such as z for example) in the base is or are arranged to establish coniinuiiication with the secondary supply. In this modification electro-iiiagnet coils are. shown operating an armature 2 with suitable iawls 3, 4. The valve is shown in the (i" position. Upon the operation of the armature 2 one of the holes 'w in the valve will first. be brought opposite the holes s leading to the secondary supply. Upon the return of the armature 2 to the osition of rest all the holes fu: will be broug it opposite the holes a: leading from the gas-tight box 1/ to the main burner. But if desired the holes. may be so arranged as to pass a suply of gas to the main burner during the intermediate position.

It will be understood that any suitable o eratng force may be used, not necessarily e ectric. For instance the movements may be actuated pneumatically by forcing a jet of aix' into a piston orelastie container arranged to take the place of the magnetic coils, or by utilizing the pressure of the "as acting on a diaphra ni. Also that the igiiiter or by-pass may arranged to be led out in any suitable manner, and that the pro ortions of the holes may be varied accor ing to circumstances.

The apparatus with suitable modifications muy be used for high or low pressure 0S. g Claims:

1. n a gas controlling device. in combination, a. main inlet conduit. provided with a port, a main outlet conduit. provided with a ort, an auxiliary outlet conduit provided with a. port, a rotatable valve provided with ports and passages communicating therewith, said valve being adapted to assume four positions, the ports of said valve and said conduits being so proportioned and arranged that in the first or normal position ot the valve the ports of said main conduits are. closed, in the second and fourth positions of the valve the main inlet conduit is in communication with the auxiliary outlet conduit and with the main outlet conduit and in the third position of the valve the main inlet conduit is in communication with the main outlet conduit and out of communication with the auxiliary outlet conduit, and valve actuating means for rotating said v alve from its first position to its third position by one impulse of ener acting in two steps, and for rotating Sai valve from, its

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third position to its first position by a similar impulse of energy acting in two ste s, the first step of the im ulses moving t e valve from its first position to its second osition or from its third position to its ourtli position, and the second step of the impulses moving the valve from its second ositioii to its third position or from its ourth position to its first position. f 2. In a gas controlling device, in combination, a main inlet conduit provided with a port, a inain outlet conduit provided with a port, an auxiliaiy outlet conduit provided with a port, a rotatable valve provided with ports and passages communicating therewith, said valve being adapted to assume four positions, the ports of said valve and said conduits being so proportioned and arran ed that in the first oi' normal position of t ie valve the ports of said main conduits are closed, in the second and fourth positions of the valve the main inlet conduit is in communication with the auxiliary outlet conduit and with the main outlet conduit and in the third position of the valve the main inlet conduit is in communication with the main outlet conduit and out of communication with the auxiliary outlet conduit, a ratchet wheel connected to said valve, two oppositely acting pawls co-acting with said ratchet wheel, and means for operating said pawls alternately for rotating said valve from its first position to its third position by one impulse of energy actin in two steps, and for rotatin said valve fiiom its third position to its rst position by a similar im ulse of energy acting in two steps, the rst step of the impulses movin the valve from its first ostion to its second osition or from its t ird position to its ourth position, and the.second step of the impulses moving the valve from its second position to its third position or from its ourth position to its first position.

3. In a gas controllin device, in combination, a main inlet con uit provided with a port, a main outlet conduit provided with a port, an auxiliary outlet conduit provided with a port, a rotatable valve provided with ports and passages communicating therewith, said valve being adapted to assume four positions, the ports of said valve and said conduits being so proportioned and arran ed that in the first or normal position of t e valve the ports of said main conduits are closed, in the second and fourth positions of the valve the main inlet conduit is in communication with the auxiliary outlet conduit and with the main outlet conduit, and in the third position of the valve the main inlet conduit is in communication with the main outlet conduit and out of communication with the auxiliary outlet conduit, a ratchet wheel connected to said valve, two oppositely acting pawls co-acting with said ratchet wheel, an electro-magnet, un armature therefor connected to said pawls, one of said pawls bein o erative and rotating said ratchet whee wliien the armature is attracted, the other of said pawls being opprative and rotating said ratchet wliee w en the armature is released and returns to its normal position, whereby said valve will be rotated from its first position to its third position by one impulse of energy acting in two steps and from its third position to its first position by a similar impulse of ener y acting in two ste s, the first step of tge impulses moving t e valve from its first position to its second position or from its third ositioii to its fourth position and the second step of the impulses moving the valve from its second position to its third positionpr from its fourth position to its rst position.

n testimony whereof have signed my name to this specification in the presence of two subscribin witnesses.

EPHRAI WILLIAM HAVERS. `Witnessesi STEPHEN EnwAiio GUNi'oN, WILLIAM ANDERSON Siiiirii.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

